Setts



H. M. &M. J CHAMBERLAIN.

- Breech-loading Fire-arm.

Patented Jan. 8, 1867.

Witnesses: Z;

@nitrh MARTIN J. AND- HIRAM M. GHAMBERLIN, or SPRINGFIELD, MASSACHU-SETTS.

Letters Patent No. 60,998, dated January s, 1867.

IMPROVEMENT IN BEECH-LOADING FIRE-ARMS.

TO ALL ,WHOM IT MAY CONCERN:

Be it known that we, MARTIN. J. CHAMBERLIN and HIRAM M. OHAMBERLIN, bothof Springfield, Hampden county, Commonwealth of Massachusetts, haveinvented certain new and useful improvements in Breech-LoadingFire-Arms; and we do hereby declare that the following is a full andexact description thereof, reference being had to the accompanyingdrawings, and to letters of reference marked thereon. In the drawingsFigure 1 is a plan; and

Figure 2, a side view and partial section of the breech'of our improvedfire arm.

Figure 3 is a similar side view, with the parts in another position. I

This invention consists in certain improvements in the arrangement ofthe recoil-block in relation to the trigger and hammer, and also to itsarrangement in the receiver or breech-piocc.

In construction, our gun consists of a receiver or breechpiece, A, towhich is attached the barrel B and stock C. Inside of this receiver theparts are arranged as we will now describe. D is the recoil-block,pivoted forward of the rear end of the barrel at E. At its rear end itextends upward so as to cover the rear'cnd of the bore when it israised, as shown. in fig. 2. Directly in the rear of this recoil-blockwe place the hammer F and trigger G. This hammer and trigger are inthemselves exactly similar to the ordinary hammer and trigger, but theyare so arranged behind the recoil-block that when the trigger supportsthe hammer, and the recoil-block is pushed down even in the least, thetrigger cannot be pulled away from the notch in the hammer, as is shownin fig. 3; and if the hammer is down, as shown in fig. 2, therecoil-block is fastened up by the trigger; nor can the latter bewithdrawn from underthe recoil-block until the hammer is drawu back, Bythis simple arrangement we accomplish, without the addition of extraparts, what has heretofore only been accomplished by the use of extraand often complicated arrangements, namely, the arm cannot be firedunless the parts are in the proper position for firing; that is, unlessthe recoil-block is in position against the end of the bore, thuspreventing premature discharge, and immediately the trigger is pulled itcomesunder the recoilblock, acting as a brace to keepit in positionagainst the barrel. In order that the. force of the recoil may not cometoo much on the pin to which the recoil-block is pivoted at E, nor uponthe trigger acting as a brace, we form the recoil-block with projectionsH K on each side. which work in channels H K cut for the purpose in thesides of the receiver, so that when the gun is fired the recoil isreceived'by the sides of the receiver and .not by the pivot E ortrigger. In this case these'channels are cut on arcs of circles struckwiththe pin E as a centre; but, if desired, this pivot may be taken ofl'together with the projecting arm L of the recoil-block, and

the recoil-block slide in the ways without other guide or fasteningexcept the trigger-brace G. In order tokeep dust, dirt, &c., fromgetting into the lock I form the projection M near the bottom of therear end of the barrel, and projecting from that part of the receiverinto which the barrel is screwed; this projection extends back until itmeets the recoil-block so as to close the opening which would otherwisebe formedby drawing back the recoil-block., i l

It will be seen that in this invention we obtain, without any parts butthose necessary in all breech-loaders, a compact and efiicient arm,strong and durable, and perfectly safe from acdidental discharge.

Now, having described our invention, what we claim as new, and desire tosecure by Letters Patent, is

' 1. Using the trigger as a brace to support the recoil-block,substantially in the manner herein set forth.

2. So combining and arranging recoil-block, hammer, and trigger thatwhen the recoil-block is raised up against the rear end of the barrel,and the trigger pulled for the purpose of firing, the recoil-block issupported by the trigger acting as a brace and kept in place by thehammer. And when the recoil-block is down and the trigger in the notchof the hammer is (the trigger) is kept from being pulled out from underthe hammer by the recoil-block, substantially as herein set forth. p

3. The projection M when constructed and arranged in the manner and forthe purpose set forth.

M. J. CHAMBERLAIN, H. M. OHAMBERLIN.

Witnesses:

J. B. GARDINER,

EDWARD H. HYDE.

